Tv chef Rachael Ray has asked staffers to perform a wacky exorcism ritual while planning her move into arch rival Martha Stewart’s Chelsea studio, ordering them to burn bundles of sage to chase away negative “spirits.” “She ordered her staff to ‘sage the place,’ ” a source told us yesterday, adding that Ray has openly told friends and aides of her plan. The dueling domestic divas have a heated history, and Ray is determined to purge the premises at 221 W. 26th St. of any lingering bad vibes before moving in late next month. Stewart had taped “The Martha Stewart Show” there for years before the Hallmark Channel pulled the plug in January, but she still uses the studio for her PBS cooking show “Martha Stewart’s Cooking School” and will be there filming until mid to late June. “There is bad blood between the two chefs. Martha has spoken openly about her disdain for Rachael,” the source said. Martha had publicly said Rachael’s style was “not good enough for me.” She added, “She’s more of an entertainer . . . with her bubbly personality, than she is a teacher, like me.” Sage has been used for centuries in exorcisms and cleansing rituals, an expert told The Post. “Evil spirits don’t like the smell of sage, so they will flee,” said Mary Ellen O’Leary of the Blue Sage Institute in Albuquerque, NM. “Sage has a property that gives a certain kind of cleansing. The smoke goes up and enters into the spirit world as an offering,” she said. Ray’s rep denied the “saging,” saying, “It’s a funny story, but this absolutely did not happen.” A Stewart rep confirmed that Ray’s crew had access to the studio. “Martha and our crew are still in that space producing ‘Martha’s Cooking School.’ We did give Rachael Ray’s production team access to the space as a courtesy.